TY  - BOOK
AU  - Downs, R.J
AU  - Hellmers, H
TI  - Environment and the experimental control of plant growth
SN  - 0122214501
U1  - 581.310724/DOW 
PY  - 1975///
CY  - London
PB  - Academic Press
KW  - Greenhouses
KW  - Plant ecology--Research
ER  -